Type-writing machine.



c. 'B. GORGORAN. TYPE WRITING MACHINE.

I nrnonmn rum) OUT. 6. 1911.

Patented Nov .26,1912.

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c. B. concomn. TYPE WRITING MACHINE, APPLIOATIOII FILED OQT- 6,1911.

Patented Nov. 26, 1912.;

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UNITED STATES Parana: orrica...

CORNELIUS B. CORCORAN, OF NEW YORK,

N. Y., ASSIGNOR TO UNDERWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

To all whom it may concern:

Be it known that I, CORNELIUS B. Conco- RAN, a citizen of the United States, residingin borough of Bronx, city of New York, in the county of New York .and State of New York, have invented certain new and useful Improvements in Type-Vriting Machines, of which the following is specification.

This invention relates to the mechanism in a front strike typewriting machine, by

which the ribbon is, vibrated toeover and uncover the printing point at every type stroke. I

In the patent to F. A. Cook, No. 926,050, dated June 22, 1909, a bichrome ribbon mechanism 'is shown in connection with a device for rendering the ribbon inoperative, so that the types may strike direct 1y on the paper, as is desirable in writing stencils. In said patent, the vibrating lever for 'the ribbon carrier is engaged by an actuator which is operated by the universal bar frame at each type stroke. This actuator is shiftable so that slots thereon may engage with one or the other of wrist pins set on said lever at variable distances from its fulcrum, and

thus impart a variable throw to the ribbon.

This device can be so set as to bring the top or the bottom of the ribbon between the type and the paper at will, and thus from a striped ribbon more than one color of writing can be written. 'Also means are provided for disengaging the lever from said actuator, to render the ribbon. inoperative even though the type is struck. This vibrating lever is fulcrumed on a bracket connected with the platen shift rail, for shifting the ribbon bodily with the platen when writing with the upper case types. Whether the ribbon is operative or is inoperative, as in writing stencils, said lever and ribbon carrier always move bodily with the platen when the latter is shifted, since the lever fulcrum is fast to the platen shift rail. The

' fulcrum is positively returned to normal position, but the 'lever returns by its own weight, so slight causes, like a bend in the carrier, or dust getting into the carrier, are liable to preven the lever from returning promptly to normal positiontherefore may swing on itspivot when being lowered, and hence possibly cause the ribbon to cover the printing point, and interfere with sten- Specification of Letters Patent.

Application filed October ,6,

Patented Nov. 26, 1912.

'1911. Serial No. 653,118.

.is prevented from turning about its fulcrum.

The ribbon carrier is thereforemoved positively with the platen when the latter is shifted.

In the accompanying drawlngs, Figure 1 is a sectional View of an Underwood front strike typewriting machine, showing my invention as applied thereto. Fig. 2 is a detail view of the principal parts of my inven tion. Fig. 3 shows the vibrator lever as locked when my invention is applied. Fig. 4 .hows the vibrator levercin its normal position when raising the ribbon in ordinary writing. I

Keys 1 of the typewriter depress levers 2 to move bell cranks 3 to raise type bars 4 causing types 5 and 6 to strike against the front of a platen 7 carried on a platen frame 8. Said platen frame is pivotally mounted at 9 on a carriage 10, which travels on rails 11 and 12 in the ordinary letter-feeding movement, operated by a universal bar 13.

The platen 7 is shiftable by means of a key 14 acting through a lever 15 and bell crank 16, the latter supporting a shift rail 17. This shift rail bears against a roll 18 mounted on the platen frame 8, and so may cause said frame to be raised at will.

Universal bar 13 is pivoted at 19 on the frame and is actuated by heels 20 of the {-ype bars 4, at every depression of any type :ey.

On the platen shift rail ,is pivotally mounted at 21, a vibrator lever 22, erate a ribbon carrier or vibrator 23 to raise the ribbon in front of the platen every time a type key is depressed. The vibrator=lever 22 is moved by an upstanding wall 24 on the universal frame, on which are wings comprising slots 25 and 26 adapted to-engage pins 27 and 28 on the vibrator lever 22.'

Every time the universal bar is reciproto op cated, one of the pins 27 or 28 engages the wings and is moved back,- thus raising the vibrator lever 22 and lifting the ribbon. An

1 given the ribbon.

the upper edge of the ribbon between the tlOIl.

type and the platen. This is usually black. If pin 28 is engaged, the vibrator will be ive'n a long throw, because said pin is ad acent to the fulcrum. This brings the lower edge of the ribbon (usually red) into opera- It will also be seen that the actuator 29 may occupy an intermediate position in which it'engages neither of said pins, and

- panel,

'tor 29 by means of an arm the ribbon will not ing stencils.

A link 31 is provided for shifting actua- 32 on a shaft 33, which may be turned by keys 34:. A look 35 is also provided for holding said'sha'ft so that the actuator 29 will be in its inoperative position.

On the upper end 36 of lever 22 near pins 27 and 28, is provided an armor projection 37 for cooperating with a guide, which is in the form of a panel 38. This part 38 is-opposite said arm 37 -when the actuator 29 is at its middle or'inoperative position, so'that the vibrator 23 is positively held down during the operation of cuttng a stencil, no matter what position the platen shift rail 17 may be placed in. V

Openings 39 and 40 are provided for permitting full throw of arm 37 of vibrator lever 22, whenever actuator 29 is so set as to engage with be vibrated, as in writeither pin on said vibrator, and a corresponding opening 41 is provided in the wall, 24.

-The positive locking of vibrator 23 by my improvement is shown in Fig. 3, where the platen rail has been raised above normal position; the arm bears against the and the vibrator cannot possibly swin upward. In Fig. 1, is illustrated the usua throw of the vibrator permitted in writing red.

Variations may be resorted to within the scgpe of the invention.

aving thus described my invention, I

claim:

1. In a typewriting machine, the combination of a shiftable platen, a universal bar, means moving with said shiftable platen for vibrating the ribbon at the key strokes by said universal bar, means for disconnecting sald universal bar, and means for compelling said vlbrating means to preserve its 1101'- tor lever moving wit lever to engage said actuator, s ots in sai mally inoperative position when moving with said platen during the disconnection of the universal bar.

2. In a typewriting machine, the combi nation with a ribbon vibrating mechanism, a universal bar for operating it, and means for disconnecting said mechanism from said bar for rendering the vibratin anechanism inoperative, of a shiftable p aten, a bar' shifting with the platen carrying a member of said. ribbon-vibrating mechanism, and means to compel said member to maintain its inoperative position when shifting with the platen.

3. In a typewriting machine, the combinationof ashiftable platen, a bar shifting said platen, a' ribbon' vibrator pivoted on said bar, means and shiftable-means for silencing the vibra; tor, a guide, and a member on the vibrator to cooperate with said guide to'h'old the vi brator positively inoperative. 4. In a typewriting machine, 'nation with a shiftab e] platen and a UBIVGI': sal bar, of a; ribbon vibrator lever moving with said, laten, an actuator. moved by sai universal ar for operating said lever, shifi:

positively inoperative during theshifting"; of the platen.

5. In at I nation of a s'iftable laten-, a ribbon vibrasaid platen, on said lever, an actuator havin gage said pins, means for shi ing said Jaetuator to engage either of said 'pinsor'tooc-i for actuating the vibrator, I

the combiable means forsilencing said lever, o. -an' arm or rest on saidlever, and a cooperating guide on said actuator to hold. said lever ewriting machine, the, 'combicupy a position free from said pins,'an arm"- or rest on the lever, and a cooperating guide on the actuator to hold said lever when'iree from'said pins. 6. In a typewriting machine, thecombination'of ashiftable platen, a ribbon vibrator lever moving with said platen, pins on said lever, an actuator having slots to engage said pins, means for shifting said actuator -to engage either of said ins or to occupy a position free from sai 'pins, an arm or rest on the lever, and a cooperating uide on the actuator to hold said lever when ree from said pins; slots or' openings being provided in said actuator to accommodate said arm or rest when said pins engage said actuator.

7. In a ty ewritin'gmachine, the combination of a s iftable platen, a universal bar, a ribbon vibrator lever moving with the shiftable platen and vibrated from the universal bar through an actuator, ins on said actuator to engage said pins, means for shifting said actuator to engage either of said pins or to be free from them, an arm or rest on the lever to cooperate with aguide on the actuator to hold said lever to keep the ribbon inoperative When the platen is shifted, and a key controlling the means for shifting the actuator. I

8. In a typewriting machine, the combination of type keys operating a universal frame, a shiftable platen, a ribbon vibrator lever moving with said platen, an actuator on the universal frame, slots in said actuator, pins on said lever to cooperate with said slots to vibrate said le': 01', a key to shift said actuator to engage with either of said pins or to be free from said pins, an arm on said lever, and a panel on said actuator to cooperate with said arm to hold said ribbon lever to keep the ribbon positively inoperative when free from said pins, openings being provided in said actuator to permit said abutment to move freely when said pins enwith said slots.

9. In a typewriting machine, the combination with a universal bar, of a wall on said bar, a slide having spaced arms which embrace said wall, a vibrator lever adjacent said wall, pins on said vibrator, and wings on said slide arranged to be moved to selectively engage said pins by slots in said wings.

10. In a typewriting machine, the combination with a universal bar, of a wall on said bar, a slide having spaced arms which embrace said wall, a vibrator lever adjacent said wall, pins on said vibrator, wings on said slide arranged to be moved to selectively engage said pins by slots in said wings, an abutment on said lever, and a cooperating panel on said slide arranged to lock said lever when not engaged with a pin.

CORNELIUS B, COR-COBI'XN.

llitnesses K. FRANKFURT, Gnnnrnmo S, YOUNG. 

